如何使用Javascript从JSON中获取总计

我需要从JSON数据中获得每列的总数。下面是我的JSON数据，我想得到每列的总数

[
 {"campaign":"MD001","seen":650,"taken":62,"eligible":542,"total":1000,"ind":"E"},
 {"campaign":"MD002","seen":550,"taken":52,"eligible":342,"total":1000,"ind":"E"},
 {"campaign":"MD003","seen":800,"taken":69,"eligible":642,"total":1000,"ind":"W"},
 {"campaign":"MD004","seen":500,"taken":62,"eligible":527,"total":1000,"ind":"E"},
 {"campaign":"MD005","seen":350,"taken":29,"eligible":992,"total":1000,"ind":"w"},
 {"campaign":"MD006","seen":550,"taken":52,"eligible":342,"total":1000,"ind":"W"}
]

上面的意思是“合格的”&每个“合格的”都有不同的值，因此我需要从上面的数据中获得“合格的”总数。

您可以这样做：

data = [
    {"campaign":"MD001","seen":650,"taken":62,"eligible":542,"total":1000,"ind":"E"},
    {"campaign":"MD002","seen":550,"taken":52,"eligible":342,"total":1000,"ind":"E"},
    {"campaign":"MD003","seen":800,"taken":69,"eligible":642,"total":1000,"ind":"W"},
    {"campaign":"MD004","seen":500,"taken":62,"eligible":527,"total":1000,"ind":"E"},
    {"campaign":"MD005","seen":350,"taken":29,"eligible":992,"total":1000,"ind":"w"},
    {"campaign":"MD006","seen":550,"taken":52,"eligible":342,"total":1000,"ind":"W"}
]

var total = 0;

$.each(data, function(index, item){
    total = total + item.eligible;
});

工作小提琴：

您可以这样做：

data = [
    {"campaign":"MD001","seen":650,"taken":62,"eligible":542,"total":1000,"ind":"E"},
    {"campaign":"MD002","seen":550,"taken":52,"eligible":342,"total":1000,"ind":"E"},
    {"campaign":"MD003","seen":800,"taken":69,"eligible":642,"total":1000,"ind":"W"},
    {"campaign":"MD004","seen":500,"taken":62,"eligible":527,"total":1000,"ind":"E"},
    {"campaign":"MD005","seen":350,"taken":29,"eligible":992,"total":1000,"ind":"w"},
    {"campaign":"MD006","seen":550,"taken":52,"eligible":342,"total":1000,"ind":"W"}
]

var total = 0;

$.each(data, function(index, item){
    total = total + item.eligible;
});

---

工作小提琴：

你必须计算它：

var data = // your json data
var total = 0;
for(var i = 0; i < data.length; i++){
    total += parseInt(data[i].eligible);        
}

var data=//您的json数据
var合计=0；
对于（变量i=0；i

---

这是一把小提琴，你得计算一下：

var data = // your json data
var total = 0;
for(var i = 0; i < data.length; i++){
    total += parseInt(data[i].eligible);        
}

var data=//您的json数据
var合计=0；
对于（变量i=0；i

---

这是一把小提琴

，是什么阻止你循环？您尝试了什么？涉及到几个步骤：解析JSON、循环数组、计算总和。你真的需要帮助吗？你试过什么？你的问题不清楚让我解释一下。。我只需要数组中每个“合格”元素的总数。。需要在页面上打印，是什么阻止您循环？您尝试了什么？涉及到几个步骤：解析JSON、循环数组、计算总和。你真的需要帮助吗？你试过什么？你的问题不清楚让我解释一下。。我只需要数组中每个“合格”元素的总数。。需要在页面上打印请不要将json称为不包含json的变量。Woops，更改它！：$请不要将json称为不包含json的变量。Woops，更改它！：$